class_docstr: Find tags and other markup and call handler functions.
  
  Usage:
      p = HTMLParser()
      p.feed(data)
      ...
      p.close()
  
  Start tags are handled by calling self.handle_starttag() or
  self.handle_startendtag(); end tags by self.handle_endtag().  The
  data between tags is passed from the parser to the derived class
  by calling self.handle_data() with the data as argument (the data
  may be split up in arbitrary chunks).  If convert_charrefs is
  True the character references are converted automatically to the
  corresponding Unicode character (and self.handle_data() is no
  longer split in chunks), otherwise they are passed by calling
  self.handle_entityref() or self.handle_charref() with the string
  containing respectively the named or numeric reference as the
  argument.
code: def handle_entityref(self, name):
      pass
  
imports: import re
  import _markupbase
  from html import unescape
label_desc: Use image node_id 19 for calling the HTMLParser obj's underlying member method code with example usage: obj.handle_entityref(name) without return types